[alsa-devel] [PATCH 0/2] ALSA: dice: optimization for TC Electronic Studio Konnekt 48

[Takashi Iwai]

On Sun, 27 May 2018 03:13:28 +0200,
Takashi Sakamoto wrote:
> 
> Hi,
> 
> This patchset adds optimization to current ALSA dice driver for Studio
> Konnekt 48 produced by TC Electronic 2007.
> 
> My recent work adds hard-coded stream format parameters for all of models
> produced by TC Electronic with ASICs of Dice series:
> 
>  * Konnekt 24D
>  * Konnect 8
>  * Studio Konnekt 48
>  * Konnekt Live
>  * Desktop Konnekt 6 
>  * Impact Twin
>  * Digital Konnekt 32
> 
> (Series of PowerCore is not based on Dice.)
> 
> Except for Konnekt Live, I actually test with these models, and realized
> that current ALSA dice driver brings several issues, mainly with noises
> but with detection of packet discontinuities and jumbo payload for some
> models and transmission frequencies. I guess they comes from timestamping
> quirks which I reported:
> 
> [alsa-devel] Dice packet sequence quirk and ALSA firewire stack in Linux 4.6
> http://mailman.alsa-project.org/pipermail/alsa-devel/2016-May/107715.html
> 
> I have never found any good solution for this issue.
> 
> Takashi Sakamoto (2):
>   ALSA: dice: fix stream format parameters for TC Electronic Studio
>     Konnekt 48
>   ALSA: dice: unuse second stream for MIDI conformant data channel for
>     TC Electronic models

Applied both patches now.  Thanks.


Takashi